Phenolphthalein, BP2013/USP23
Molecular Formula: C20H14O4
Molecular Weight: 318.33
CAS No.: 77-09-8
Technical Data Sheet
Appearance: White powder
Identification: positive
Color of solution: Red @ PH 10 / Colorless @ PH 8
Acidity or alkalinity: Pass
Melting point: ≥ 260℃
Heavy metals: ≤ 10ppm
Arsenic: ≤ 8ppm
Chloride: ≤ 100ppm
Sulfate: ≤ 200ppm
Loss on drying: ≤ 0.5%
Sulfated ash (residue on ignition): ≤ 0.1%
Limit of fluoran: Pass
Related substances: ≤ 0.5%
Chromatographic impurities: ≤ 1.0%
Organic volatile impurities: Pass
Assay: 98.0-101.0%
Packing: 25kg/fiber drum
Usage: pH indicator irritant laxative,for the treatment of constipation
